Corn

This used to be without a doubt the fastest Nintendo 64 emulator available at that time(and it is?). It ran at full speed, with full sound on my old Pentium 233 with 3DFX Voodoo 1. Imagine what Corn can do on a system way more powerfull than that...

Unfortunately it isn't very accurate though. Both of the games I played (Super Mario 64 and WaveRace) showed some serious emulation defects. But those defects didn't make the games unplayable fortunately.